Monomer identification in carbohydrates

Steps:

• Examine the diagram to identify the monomer as glucose, based on its ring structure and functional groups.
• Recall that polysaccharides like glycogen and amylopectin are polymers of glucose monomers linked by glycosidic bonds.
• Differentiate branched vs. linear structures: amylopectin has alpha-1,4 and alpha-1,6 linkages forming branches.
• Eliminate disaccharides like sucrose, which combine glucose and fructose.

Why B is correct:

• Amylopectin is a branched polysaccharide composed entirely of glucose monomers, matching the diagram's structure per carbohydrate polymer definitions.

Why the others are wrong:

• A. Glycogen uses glucose but has more frequent branching than amylopectin, not a perfect match without diagram specifics.
• C. No option provided, invalid choice.
• D. Sucrose is a disaccharide of glucose and fructose, not solely the given monomer.

Final answer: B